You must also connect the appropriate signals from your transceiver to the PW1's '''ACC-1''' connector, whose pins are described on page 4 of the ''PW1 Instruction Manual''. If you will be using a non-Icom transceiver, augment the '''ALC''' and '''SEND''' connections shown in the ''Using a non-Icom exciter'' diagram at the bottom of page 8 with '''GND''' and '''13.8 V''' connections to the PW1's '''ACC-1''' connector (pins 2 and 7 respectively).

Controlling an Icom PW1 Amplifier

The Icom PW1 Amplifier can automatically track the frequency of an Icom transceiver if

The PW1 and transceiver are connected to the same CI-V bus

The transceiver's CI-V Transceive setting is enabled

During an initial programming step, the PW1 learns the transceiver's CI-V address. From then on, the PW1 monitors the CI-V bus for new frequency messages emitted by the transceiver when it QSYs (emitted because the tranceiver's CI-V Transceive setting is enabled), and adjusts its frequency accordingly. If 10 seconds elapse without the PW1 receiving a new frequency message, the PW1 begins sending report frequency directives to the transceiver via the CI-V bus.

With no other devices connected to the CI-V bus, this arrangement enables the PW1 to track the transceiver's frequency. However, if the user wishes to run a PC-hosted transceiver control application to support logging, digital mode operations, DX spot collection, etc., the required connection of a PC-controlled CI-V interface to this CI-V bus results in collisions between PC-initiated CI-V commands and the transceiver's responses to the PW1's report frequency commands. Unfortunately, the PW1 lacks the logic required to detect and reject CI-V messages damaged by collisions; as a result, the PW1 fails to accurately track the transceiver's frequency.

Commander's Secondary CAT Port can be configured to interact with a PW1 connected to a private CI-V bus, enabling the PW1 to track the primary transceiver's frequency without collision damage. This configuration allows the PW1 to track the frequency of any transceiver that Commander can control, not just Icom transceivers.

Recent Icom transceivers like the IC-7700 and IC-7800 can be directly connected to an RS-232 cable without need of a CI-V interface; the IC-7200 and IC-7600 can be directly connected to one of a PC's USB ports, creating a virtual serial port that eliminates the need for a physical serial port, RS-232 cable, and CI-V interface. The CI-V interfaces required by older Icom tranceivers and by the PW1 can be [:ConnectingIcom: acquired or assembled]. Some non-Icom transceivers cannot be directly connected to an RS-232 cable, requiring a [:TransceiverConnection: level conversion interface].

You must also connect the appropriate signals from your transceiver to the PW1's ACC-1 connector, whose pins are described on page 4 of the PW1 Instruction Manual. If you will be using a non-Icom transceiver, augment the ALC and SEND connections shown in the Using a non-Icom exciter diagram at the bottom of page 8 with GND and 13.8 V connections to the PW1's ACC-1 connector (pins 2 and 7 respectively).

With the physical connectivity established as shown above,

If your transceiver is an Icom, use its menu system to disable its CI-V Tranceive setting